Pipe-coupling.



vJ. GAIVP. PIPE GOUPLING. A PPLIUATION mlm) JUL-Y 6,1910.

1,016,620. Patented Feb. 6, 1912.

2 SHEETS-SHEET 1.

J9 j Z7 :ji-l

Inventor Attorneys J. GAPP. PIPE GOUPLING.' IIIIIIIIIIIIII ED JULY@ 1910.

1,016,620. Patented Feb, 1912. sssssss -ssHmT '2.

; HIIIII )i-EW Mq" UNITEDI sTATEs JoHN eA'PP, or scnANToN, PENNSYLVANIA.

PIPE-COUPLING.

Specication of Letters Patent.

Application mea July e, i910'. serial No. 570,645.

To all whom it may concern.'

Be it known that I, JOHN GAPr, a citizen of the United States, residing at Scranton, inthe county of Lackawanna and State of Pennsylvania, have invented a new and useful Pipe-Coupling, of which the following is a specification.

Thisfinvention relates to pipecouplings particularly designed for making connections between injectors and boiler checks although thesanie can be used wherever it is desired to connect two pipes.'

The invention is particularly designed for connecting iron and brass pipes, one of its objects beingL to provide an interchangeable brass seat for a pipe of iron or other like material, said seatbeing so shaped as to re main irmly in place.

A further object is to provide improved means for securing the pipes together, said means being an improvement upon that dis- ,closed in Patent No. 769,896, issued to me on September 13, 1904.

With these and other objects in view the invention consists ofl certain novel details of construction and combinations of parts hereinafter more fullydes'cribed and pointed out in the claims.

In the accompanying drawings the preferred form of the invention has been shown..

In said drawings :--Figure 1 is a central longitudinal section4 through pipes having the present improvements applied thereto.

Fig. 2 is asection on line A+B Fig. 1. Fig. 3 is a perspective view showing the sectional guide ring ,and its Aretaining spring separated. Fig. 4 is a longitudinal section through the coupling, the same being shown applied to an elbow. Fig. 5 is a cent-ral longitudinal section through a slightly modified form of coupling. Flgl `6 is a section on line D-D Fig. 5. Fig. 7 is a perspective view of the `holding spring which maybe used in connection with the-device shown in Figs. 5 and 6. l

J .Referring to the figures by characters of reference 1 designates a pipe, which may be ofv iron or any other suitable metaland which is provided, in one end, with a counter-bored recess 2, the innermost'portion of whicho is screw-threaded, as indicated at 3. This counter-bored recess forms a triple seat for a ring 4 which may be made of brass and which is shaped to tit snugly within all portions of the recess, lthe outer end of said ring being anged to lap the end of the pipe Patent-,ea Feb. 6,' 1912.

I 1 and being rounded, there being recesses 5 f within the roundedl outer end of the ring for the reception of a tool whereby the said ring can be screwed' into or out of the recess 2. An external annular fiange 6 is formed upon the pipe about the recessed end thereof and an exterior annular shoulder 7 is formed upon said pipe at a point remoredfrom the flange 6.

An exteriorly 'screw-threaded nipple 8 is adapted to be clamped against the rounded end of the ring-4 by means of a coupling ring 9, the end of said nipple being concaved as indicated at 10 sov as to constitute a snug seatfor the rounded end of the ring 4. T he coupling ring 9 is interiorly screw-threaded and has an interior annular groove or chan` n nel 11 adapted to receive a guide ring 12 formed preferably of three sections. 'One Aot these sections, 13, vis inthe form of an arcuate strip having a longitudinal groove 14 in its inner or concave face whileV a longitudinally extending rectangular flange 15 is formed upon the outer or convex face of the section and along one edge thereof, said flange being proportioned to fit snugly Within the channel 11 hereinbefore referred to.

One end of the member 13 is cut off radially as indicated at 16 While the other end thereof .iscut off in a plane parallel with the end 16 as shown at 17. The second section 18 of the guide rings 12 is an exact counterpart of the member 13 with the exception that one of these members constitutes a right hand section of the guide ring while the other member constitutes a left hand section The third section of the guide ring is in the form of an arcuate plate 19 having a longitudinal groove 20 in its inner or concave face while a flange 21 of the same transverse contour as the flanges 15 is formed upon the outer or convex face of thec section. AThe ends of the section 19 are parallel and are adapted, when the, various sections are assembled, to complete the ring 12,'to contact with and bear snugly against the ends 17 of the sectionsv 13 and 18. Arcuate plate 19 has a recess 22 in one edge thereof and which extends back in to the groove 20 within the plate.

VVhen the sections of the guide ring are assembled within the coupling ring 9, the outstanding flanges 15 18 and 21 constitute a continuous annular flange which fits snugly within the channel 11, the projecting portions of the members of the guide ring resting-.within that portion of the coupling ring between the channel ll'and the end ofthe 'coupling' ring. 'lhat portion of thepipe 1 located between the shoulder 7 and the flange (3 isjaul'a'ptcd to supportthe sections v of the guide'ring within the channel 11. If

desired, however, a-spreadi'ngspring 23 may be utilized for retaining the sections of the guide ringl injftlic channel 1l independently of the pipe/l. As shown in Fig. 2, this spring is-in the forni of a split ring thel terminals ot'wvhich are bent outwardly to vt'orm.parallel arms. These arms llav'e been shown at24. iSpring 23 1s adapted to rest' firmly against the guide ring 12.

til the channeled "40 By providing the pipe l with a ring 4 formed of brass or other metal capable of withstanding the action of moisture, it becomes possible to form the pipe 1 of iron or other sheet metal without reducing the eiicieneylof thestructure. By removing the nipple 8, a' tool can be inserted into therecesses 5 and the ring 4 unscrewed from vthe pipe. 1 without the necessity of disengaging the said pipe from the coupling ring 9. To remove the pipe 1 from the ring 9, said pipe is lshifted longitudinally within the ring unportion`4 of said ring is 'brought vbeyond the kshoulder 7. -The secy :tions 13, 1S and 19 can then be separated and Vwithdrawn from the channel 11 and between ,the ring 9 and .the reduced portion of the has'. been pllng-stud, it4 Vis to be understood thatl said teriorly screw-threaded at-27 and 28 being ring may be -unseated These grooves are v"pipe 1 it of course beingnecessary .to' first contract the spring '23 so as todisengage it 4from-fthe sections of the guide ring. in Flgs. 1 and 2, the improvement shown in connect-ion with'a'couimprovements may also be employed in connection with an elbow, as shown-in Fig. 4, this elbombeing indicated at'25. Moreover, the stud, instead' of being constructed as shown in Fig. 1, canbe made with its exposed or projecting portion of uniform di- 'ameter, as shown at 26, this st ud being-inthe ring tion. tending throughout the length thereof for the reception of a suitable tool whereby the extended up to the threaded porhis ring may havegrooves 29 ex utilized in lieu of` the recesses o shown in Figs. l and 4. ,Moreover, thc ring 30 may be provided with only a single outstanding arm or'terminal 31 in lieu of the two koutstanding portions shown in Fig. 2.

Various changes can of course be made in the construction and arrangement of the part-s without departing from the spirit of the invention, it being obvious that the pipe l can be of any shapedesired and that, if preferred, the spring 23 may be dispensed with, as the same 4is unnecessary as long as the various parts are, clamped and held together in the manner shown in Fig. 1. i

What is claimed is i Y 1. A coupling including a member having an annular enlargement-,at each end, there being an annular shoulder outstanding from the outer face of one of the enlargements, a nipple, a coupling ring interiorly screw threaded for engagement with the nipple, said ring havin an interior annular groove and being slida le onto the reduced portion of the coupling member, a sectional guide ring insertible between said reduced portion and the coupling ring and expansible into the groove 1n the coupling ring, one edge of' said guide ring being substantially flush with one end of the .coupling ring, the in- L'tei-nal diameter of the guide ring when expanded being substantially equal to the external diameter of the shouldered annular enlar ement,and said expanded ring being mova le onto the annular enlargement and against the annular shoulder, andyielding means removably mounted. in the guide ring for holding it seated in the groove.

2. A'couplin'g including a member having an annular enlargement at one end, there being an annular shoulder outstanding from the .outer face of the enlargement, a nipple, a coupling ring interiorly screw threaded for engagement withl the nipple, said ring having -an interior annulargroove and,be` slidable onto the enlargement, a sectiona guide ring insertible'between the coupli ring and the member at a point rexnov from the enlargement, said ring being expansible into the groove in the coupling ring and movablewith said ring onto the enlargement, said enlargement constituting means' vfor holding the expansible ring within fthe groove, said shoulder constituting an abutment for the guide ring. i

-In testimony that I claim the foregoing as my own, I have hereto aiixed my signature in the presence of two witnesses.

JOHN GAPP.

Witnesses:v

W. F. VAUGHAN,

R. -SPELMAN 

